From the airport:

By taxi, the trip to the University takes about 20 minutes and costs about $25. To travel by bus, take bus # 97 to the "Laurier" bus stop, which is at the edge of the campus. The buses run every 15 minutes during the daytime. The fare is $2.60 and you will need exact change.
The schedule for bus # 97 is available at the OCTranspo web site along with complete transit way maps. Please note that schedules change on the weekend, so you'll want to check that out by clicking on the "Saturday" or "Sunday" buttons.

From the train station:

By taxi, the trip to the University takes about 5 minutes and costs about $10. To travel by bus, take bus # 95 to the "Laurier" bus stop, which is at the edge of the campus. The buses run every 10 minutes during the daytime. The fare is $2.60 and you will need exact change.
The schedule for bus # 95 is available at the OCTranspo web site along with complete transit way maps. Please note that schedules change on the weekend, so you'll want to check that out by clicking on the "Saturday" or "Sunday" buttons.

From the bus station:

The Voyageur Bus Terminal is located at 265 Catherine Street between Lyon and Kent St. Information on Schedules and Fares is available at http://voyageur.com or by calling 613-238-5900 or toll-free at 1-800-668-4438. By taxi, the trip from the Terminal to the University takes about 5 minutes and costs about $10. To travel by local bus, check the OCTranspo web site for route information (there is no direct route to the University Campus but bus #4 brings you to the Rideau Centre which is close by). The buses run every 15 minutes during the daytime. The fare is $2.60 and you will need exact change.

Travelling by car:

If travelling by car, you'll be on highway 417 (the Queensway). Take Nicholas Street exit. The edge of campus is at Nicholas and the Queensway. The University of Ottawa and the hotel locations are indicated on the maps section of this web site.

Parking

Check with your hotel or other accommodation choice regarding parking. If hotel parking is not available, there are several municipal parking lots available near campus.